CN201639144U - Integrated high-power 6Kw crosscurrent CO2 industrial laser power supply device - Google Patents
Integrated high-power 6Kw crosscurrent CO2 industrial laser power supply device Download PDFInfo
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- CN201639144U CN201639144U CN2010201324274U CN201020132427U CN201639144U CN 201639144 U CN201639144 U CN 201639144U CN 2010201324274 U CN2010201324274 U CN 2010201324274U CN 201020132427 U CN201020132427 U CN 201020132427U CN 201639144 U CN201639144 U CN 201639144U
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Abstract
The utility model discloses an integrated high-power 6Kw crosscurrent CO2 industrial laser power supply device, wherein an external electric network is connected with a main transformer and then connected with an auxiliary transformer after connected with an intelligent thyristor module in series, the main transformer and the auxiliary transformer are respectively connected with a high-voltage rectifying silicon stack, both ends of the high-voltage rectifying silicon stack are connected with a high-voltage capacitor, and both end points are respectively connected with the anode and the cathode of a discharging box; the external electric network is connected with a laser fan through a first alternating current contactor and a first overheat protector, connected with a vacuum pump through a second alternating current contactor and a second overheat protector and connected with a ballast resistance cooling oil pump through a third alternating current contactor and a third overheat protector; and a direct-current current sensor, a direct-current voltage sensor and an air pressure sensor are respectively connected with an A/D module through signal wires and then connected with a D/A module through a PLC, and the D/A module is connected with the intelligent thyristor module through a PID (Process Identifier) module. The utility model has the advantages of integration, energy saving, high voltage resistance and high reliability.
Description
Technical field
The utility model relates to a kind of laser power supply, in particular, relates to a kind of integral type high power 6Kw crossing current CO
2The industrial laser electric supply installation is applicable to high power 6Kw crossing current CO
2Industrial laser equipment.
Background technology
For a high power 6Kw crossing current CO
2The industrial laser electric supply installation had both needed it can provide opto-electronic conversion (laser generation) required electric energy, and also having needs it to provide electric energy for various assisting with detecting unit on the laser.Present domestic industry high power transverse flow CO
2The common thinking of laser power supply manufacturing is that the 50Hz industrial-frequency alternating current adopt is separated the controllable silicon commutation technique that boosts, control single controllable silicon conducting and reach the voltage-regulation purpose, realize the excitation power supply of opto-electronic conversion as laser, another kind of mentality of designing is from saving the electric energy angle, the high-voltage switch power supply that adopts the IGBT module is as the excitation power supply that realizes opto-electronic conversion, other CO that flows over
2Various auxiliary equipment and detection unit distributions be in the different parts of laser on the laser, adopts the high-voltage switch power supply of IGBT module can save energy consumption, but high pressure resistant and the functional reliability aspect is unsatisfactory at present, and manufacturing and maintenance cost are also very high.
Therefore, be necessary prior art is improved, design a kind of integrated transverse flow CO of reliable and stable high-output power
2The industrial laser electric supply installation can be supplied with the electric energy of realizing photoelectric conversion part on the laser and electric energy supply and whole equipment operation of each accessory are controlled integrated design in integrated.
Summary of the invention
A kind of integral type high power 6Kw crossing current CO that the purpose of this utility model is to provide
2The industrial laser electric supply installation.Have reliable and stable, high-output power, advantage such as integrated.
For realizing the utility model, adopt following technical scheme:
The external power grid that is used to power is connected with main transformer, external power grid is connected with teaser transformer after being connected in series intelligent thyristor module, main transformer is connected with high-voltage rectification silicon stack respectively with teaser transformer, the high-voltage rectification silicon stack two ends connect high-voltage capacitance, and the high-voltage rectification silicon stack two-end-point connects the anode and the negative electrode of the box that discharges respectively; External power grid by first A.C. contactor is connected with the laser blower fan with first overheat protector, external power grid passes through that second A.C. contactor is connected with vacuum pump with second overheat protector, external power grid passes through the 3rd A.C. contactor and is connected with the steady resistance cooling oil pump with the 3rd overheat protector;
DC current sensor, direct voltage transducer, baroceptor are connected with the A/D module respectively by holding wire, and the A/D module is connected with the D/A module by PLC, and the D/A module is connected with intelligent thyristor module by the PID module;
Cooling water flow quantity sensor, temperature detection sensor are connected with PLC respectively by holding wire.
Core design thinking of the present invention is to adopt laser overall system control and electric power system integrated design thinking.The core main body of control system is Mitsubishi's FX2N series mini serial controller able to programme, each sequential control working procedure with electronic system (as the cooling oil pump of discharge box, laser blower fan, vacuum pump and steady resistance case) of laser is recorded in Mitsubishi's FX2N series mini serial controller internal storage able to programme, during the operation operation, only need to get final product according to the prompting operation operation of man-machine interface instruction.This device can detection laser each condition of needing of start, realize the self-checking function in the start process, simultaneously, detect complete machine ruuning situation in the running in real time.
External power grid is through inserting this high power 6Kw crossing current CO behind the power distribution cabinet
2Industrial lasers apparatus input port: at first be connected to the 250A air switch, be divided into three the tunnel then, the first via is to the power supply of laser discharge box, this road is further divided into two-way: the one tunnel powers to main transformer, another road is connected to teaser transformer after being connected in series intelligent thyristor, the high voltage silicon stack rectification is inserted in major-minor transformation serial connection back, is loaded into the anode and the negative electrode of discharge box after the two ends connection high-voltage capacitance.The second the road be connected to isolating transformer (380V---220V), be power supplies such as low tension switch power supply and PLC.Third Road is given the cooling oil pump power supply of laser blower fan and vacuum pump and steady resistance case respectively through A.C. contactor and overheat protector.The sequence control instruction operation that their switch sequencing is set according to the PLC internal processes.
Because hybrid working gas is in the CO of excitation state in the laser when electric excitation
2There is the competition of light radiation transition and collision thermal effect decay in molecule when energy level transition, just have complicated interior environment, and stable current/voltage has crucial effects to laser power stable between pole plate.The present invention is when addressing this problem, be based on the thought of automatic closed loop control system, system provides signal by relevant feedback, is added in the instantaneous state of current/voltage between pole plate again by the PID function control of miniature serial controller able to programme, reaches to make the laser aim of stable operation.
The present invention makes full use of more IO port and the communication function of PLC, at any time monitor the flow of cooling water information in the machine system, the temperature information of major-minor transformer, and by being installed in the RS485 port of the gas composition analyzer on the laser cavity, gather the composition information of the gas in the laser cavity in real time and feed back to PLC inside, according to the working procedure that record PLC inside, control the operation of complete machine automatically.
The needed master drive power supply of needle plate discharge system in the laser discharge box is to be made up of ac high-voltage transformer and high voltage silicon stack and high-voltage capacitance, behind these parts, alternating current is become high voltage direct current.This high power 6Kw CO that flows over
2Industrial lasers apparatus step-up transformer is divided into rebasing transformer (main transformer) and regulates transformer (teaser transformer) according to its function.Rebasing transformer is that the external power grid three-phase alternating current boosts through main transformer, by producing a direct current high pressure after high voltage silicon stack rectification and the high-voltage capacitor filtering, this transformer purposes is exactly directly to make sparking electrode reach starter discharge purpose, on this basis, add by the adjusting transformer of intelligent object control and form high-voltage ac power jointly, in conjunction with follow-up rectification link, for providing galvanic current, sparking electrode presses, form large volume, glow discharge uniformly is for laser output is got ready.The adjusting of teaser transformer voltage is to adopt intelligent thyristor module to control the pressure regulation of alternating voltage, the basic controlling process is as follows: by exporting analog voltage signal in the DA of PLC module controls hardware PID module, this aanalogvoltage is regulated the angle of flow of intelligent thyristor module, thereby make the output voltage of teaser transformer reach the purpose of smooth adjustment, realized the control that weak electric signal changes forceful electric power, so this high power 6Kw crossing current CO
2The voltage stabilization and current stabilization of industrial lasers apparatus is meant by voltage sensor and current sensor feedback signal, through after the CPU computing of Programmable Logic Controller, utilizes the control of PID adjustment module realization to intelligent object, and then reaches the voltage stabilization and current stabilization state.In order to weaken the interference of external power grid, the mode that the major-minor transformer adopting is avoided the peak hour and superposeed makes that transformer output is more stable, and the electronic circuit of other all kinds of control detection sensing links is by the corresponding low-voltage direct stabilized voltage power supply power supply that is placed on the power bay.Whole power bay device also can be separately as a device promptly in the laser lower front.
The utlity model has following advantage:
The cross-flow co2 laser of direct-current discharge is to adopt three quadrature excitation, and promptly the working gas flow direction, course of discharge and laser resonance direction are orthogonal, needs high-voltage DC power supply that the energy level excitation is provided.For adopting the 50Hz alternating current to separate the controllable silicon commutation technique that boosts, light current road system controls single silicon controlled power supply, because the existence of highfield in less space, make that the light current control circuit is vulnerable to disturb, the circuit part of control phase balance particularly, usually adopt single-unit transistor electronic device, in order to guarantee phase equilibrium, need the transistorized parameter of these single-units very close, just the technological parameter that uses electronic device is had relatively high expectations, thereby make device manufacturers be difficult for debugging and production, the client is not easy operational maintenance and safeguards.For the equipment of the high-voltage switch power supply that adopts the IGBT module as the sparking electrode supply power, biggest advantage is to save energy consumption, but the IGBT module is unsatisfactory at present aspect high pressure resistant and functional reliability at present, particularly when laser needs more high power, utilize the defective of the Switching Power Supply of IGBT module manufacturing just to show, and manufacturing and maintenance cost are also very high.The present invention designs reliable and stable according to present domestic equipment market demand, the integrated high power 6Kw crossing current CO of high-output power
2The industrial laser electric supply installation, it is supplied with the electric energy of each consuming parts on the laser and controls integrated design in integrated, simultaneously integrated control electrion system, it is reliable to utilize self feed back to reach discharge stability, and then power output is stable, the advantage of native system is more obvious during high-output power more than needing 5Kw, pays attention to the monitoring and the feedback of equipment integral operation information simultaneously more.
Description of drawings
Fig. 1 is major-minor transformer pressure adjusting structure figure
Fig. 2 is intelligent thyristor and teaser transformer johning knot composition
Fig. 3 is electronic system architecture figure such as blower fan
Fig. 4 is transducer and intelligent thyristor johning knot composition
Wherein: 1-teaser transformer, 2-main transformer, 3-high-voltage rectification silicon stack; the 4-high-voltage capacitance, 5-intelligence thyristor module, 6-surge absorbing circuit; 7a-first A.C. contactor, 7b-second A.C. contactor, 7c-the 3rd A.C. contactor; 8a-first overheat protector, 8b-second overheat protector, 8c-the 3rd overheat protector; the 9-blower fan; the 10-cooling oil pump, 11-vacuum pump, 14a-A/D module; the 14b-D/A module; the 15-PID module, 16 DC current sensor, 17-direct voltage transducer; the 18-baroceptor; 19-cooling water flow quantity sensor, 20-temperature detection sensor, 21-PLC.
Embodiment
Embodiment of the present utility model is as follows:
The external power grid that is used to power is connected with main transformer 2, external power grid is connected with teaser transformer 1 by the intelligent thyristor module of serial connection 5 backs, main transformer 2 is connected with high-voltage rectification silicon stack 3 respectively with teaser transformer 1, high-voltage rectification silicon stack 3 two ends connect high-voltage capacitance 4, and high-voltage rectification silicon stack 3 two-end-points connect the anode and the negative electrode of the box that discharges respectively; External power grid by the first A.C. contactor 7a is connected with laser blower fan 9 with the first overheat protector 8a, external power grid passes through the second A.C. contactor 7b and is connected with vacuum pump 11 with the second overheat protector 8b, external power grid passes through the 3rd A.C. contactor 7c and is connected with steady resistance cooling oil pump 10 with the 3rd overheat protector 8c;
DC current sensor 16, direct voltage transducer 17, baroceptor 18 are connected with A/D module 14a respectively by holding wire, A/D module 14a is connected with D/A module 14b by PLC21, and D/A module 14b is connected with intelligent thyristor module 5 by PID module 15;
Cooling water flow quantity sensor 19, temperature detection sensor 20 are connected with PLC21 respectively by holding wire.
This high power 6Kw CO that flows over
2The industrial laser electric supply installation can be divided into three parts: main circuit part, signal input, control unit.
Main circuit part mainly is: the 6Kw CO that flows over
2High-voltage DC power supply, each auxiliary system electricity consumption part that the photoelectric conversion part of laser is required.External power grid 380V three-phase alternating current, through the 250A air switch, enter main circuit after, most electric energy arrives main transformer and teaser transformer.Main transformer primary coil is a delta connection, and secondary coil is a delta connection; Teaser transformer primary coil is a delta connection, and secondary coil is a star connection.Receive high-voltage rectification silicon stack then and get on, the both positive and negative polarity high-voltage capacitors connected in parallel of silicon stack.Through after this part, the voltage between positive plate and the rhenium tungsten pin can reach 4000V, can reach 10A according to laser power output needs direct current.Main transformer is designed to the grade tap, different tap ac output voltage differences.This transformer is output as rebasing voltage, and tap is divided into third gear (A1 B1 C1) 2800V; (A2 B2 C2) 3000V; (A3 B3C3) 3200V, teaser transformer also is divided into high, normal, basic third gear simultaneously, and by intelligent thyristor module control change in voltage.The main circuit part also comprises surge absorbing circuit 6, shields.
The input of signal comprises DC current sensor, direct voltage transducer and baroceptor and cooling water flow quantity sensor.Wherein current sensor and voltage sensor are installed in dc voltage output end in this device.Baroceptor and cooling water flow quantity sensor are installed in the cavity of laser and in the laser water supply water route.Collect to such an extent that information is delivered to the input port that analog signal AD sampling re-sends to PLC.PLC detects the above-mentioned information in the machine system at any time, guarantees the safe and stable operation of complete machine.Major-minor transformer can generate heat when working, and for power supply inner body environment and safe operation significant effects is arranged all.The temperature detection sensor transmit button signal of major-minor transformer is to the PLC input port for this reason, when temperature is higher than setting numerical value, send alarm signal to operating personnel by PLC, if operating personnel have the reply reaction for a long time, PLC directly sends the output control command, stops laser works.The composition of the working gas in the laser cavity is along with the variation of operating time can change, finally cause the variation of laser output power, gather the composition information of the gas in the laser cavity in real time and feed back to PLC inside by the gas composition analyzer device that is installed on the laser cavity for this reason by RS485 communication board port, inside is provided with operational order, and decision sends prompting alarm report and switch control automatically when gas componant can not meet the demands.
The object of the invention is to provide with reliable and stable power supply for the above superpower laser of 6Kw, for this reason control unit focus on solve in the laser cavity hybrid working gas and discharge system face complicated in problem of environment, by miniature serial controller PID able to programme (Propotional Integral Derivative) function control operation.At interior system is positive dynamical system, sampling period T, proportional gain Kp, storage gain KI, differential gain KD fixes on really in the PLC software systems realization is set, this function elder generation is by the real time data of current sensor that collects and voltage sensor, be connected to the AD module of PLC, be sent to PLC inside, the program that is provided with according to inside again, in time adjust the output voltage of corresponding hardware PID module through the DA module, this output analog signal is received the outer parameter input point of intelligent thyristor, the current/voltage of control high voltage direct current power pack is stable in real time, reaches the purpose of stable discharging system thus.
Claims (4)
1. integral type high power 6Kw crossing current CO
2The industrial laser electric supply installation comprises teaser transformer (1), main transformer (2), high-voltage rectification silicon stack (3), intelligent thyristor module (5), A/D module (14a), D/A module (14b), PID module (15), PLC (21), it is characterized in that:
The external power grid that is used to power is connected with main transformer (2), external power grid is connected with teaser transformer (1) by the intelligent thyristor module of serial connection (5) back, main transformer (2) is connected with high-voltage rectification silicon stack (3) respectively with teaser transformer (1), high-voltage rectification silicon stack (3) two ends connect high-voltage capacitance (4), and high-voltage rectification silicon stack (3) two-end-point connects the anode and the negative electrode of the box that discharges respectively; External power grid by first A.C. contactor (7a) be connected with laser blower fan (9) with first overheat protector (8a), external power grid passes through that second A.C. contactor (7b) is connected with vacuum pump (11) with second overheat protector (8b), external power grid passes through the 3rd A.C. contactor (7c) and is connected with steady resistance cooling oil pump (10) with the 3rd overheat protector (8c);
DC current sensor (16), direct voltage transducer (17), baroceptor (18) are connected with A/D module (14a) respectively by holding wire, A/D module (14a) is connected with D/A module (14b) by PLC (21), and D/A module (14b) is connected with intelligent thyristor module (5) by PID module (15).
2. a kind of integral type high power 6Kw crossing current CO2 industrial laser electric supply installation as claimed in claim 1, it is characterized in that: described PLC (21) is connected with cooling water flow quantity sensor (19), temperature detection sensor (20) respectively by holding wire.
3. a kind of integral type high power 6Kw crossing current CO2 industrial laser electric supply installation as claimed in claim 1, it is characterized in that: described PLC (21) adopts the FX2N of Mitsubishi series mini serial controller able to programme.
4. a kind of integral type high power 6Kw crossing current CO2 industrial laser electric supply installation as claimed in claim 1, it is characterized in that: described main transformer (2) is established the grade tap, and tap is divided into 2800V, 3000V, 3200V third gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201324274U CN201639144U (en) | 2010-03-12 | 2010-03-12 | Integrated high-power 6Kw crosscurrent CO2 industrial laser power supply device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010201324274U CN201639144U (en) | 2010-03-12 | 2010-03-12 | Integrated high-power 6Kw crosscurrent CO2 industrial laser power supply device |
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| CN201639144U true CN201639144U (en) | 2010-11-17 |
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| CN2010201324274U Expired - Fee Related CN201639144U (en) | 2010-03-12 | 2010-03-12 | Integrated high-power 6Kw crosscurrent CO2 industrial laser power supply device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720683A (en) * | 2012-05-11 | 2012-10-10 | 常州新德冷机有限公司 | Air conditioner indoor modularization fan |
| CN104037749A (en) * | 2013-03-04 | 2014-09-10 | 深圳市大族激光科技股份有限公司 | AC power supply control system |
| CN111416272A (en) * | 2020-04-26 | 2020-07-14 | 中国科学院合肥物质科学研究院 | Trigger and protection circuit of excimer laser high-voltage switch |
-
2010
- 2010-03-12 CN CN2010201324274U patent/CN201639144U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720683A (en) * | 2012-05-11 | 2012-10-10 | 常州新德冷机有限公司 | Air conditioner indoor modularization fan |
| CN104037749A (en) * | 2013-03-04 | 2014-09-10 | 深圳市大族激光科技股份有限公司 | AC power supply control system |
| CN104037749B (en) * | 2013-03-04 | 2017-04-12 | 大族激光科技产业集团股份有限公司 | AC power supply control system |
| CN111416272A (en) * | 2020-04-26 | 2020-07-14 | 中国科学院合肥物质科学研究院 | Trigger and protection circuit of excimer laser high-voltage switch |
| CN111416272B (en) * | 2020-04-26 | 2024-04-02 | 中国科学院合肥物质科学研究院 | Trigger and protection circuit of excimer laser high-voltage switch |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20150312 |
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| EXPY | Termination of patent right or utility model |